Even if they are drunk, I don't see why that's an excuse for anything they do afterwards anyway. Drunk or not, if someone does something stupid, it's still stupid. I don't like how stupid people are allowed to get away with it by pleading inebriation, when they should be ridiculed to the full extent of their stupidity. Don't know, I've never had to use it. My only explanation for it is a "handy" excuse if caught.